feat(cli): implement tsv format for queries

cli/src/main.rs

@@ -10,6 +10,7 @@ use regex::Captures;
 use regex::Regex;
 use reqwest::Url;
 use serde_json::json;
+use std::collections::HashMap;
 use std::net::SocketAddr;
 use std::path::Path;
 use std::path::PathBuf;
@@ -196,16 +197,34 @@ fn main() -> Result<()> {
             let client = reqwest::blocking::Client::new();
             let response = client.post(api_url).body(query).send()?;
 
-            match response.error_for_status_ref() {
-                Ok(_) => match format {
-                    OutputFormat::Json | OutputFormat::Raw => Ok(println!("{}", response.text()?)),
-                    OutputFormat::Tsv => todo!(),
-                },
-                Err(err) => {
-                    error!("{}", response.text()?);
-                    Err(err.into())
+            response.error_for_status_ref()?;
+
+            match format {
+                OutputFormat::Json | OutputFormat::Raw => println!("{}", response.text()?),
+                OutputFormat::Tsv => {
+                    eprintln!(
+                        "entity\tattribute\tvalue\ttimestamp\tprovenance"
+                    );
+                    response
+                        .json::<HashMap<String, serde_json::Value>>()?
+                        .iter()
+                        .for_each(|(_, entry)| {
+                            println!(
+                                "{}\t{}\t{}\t{}\t{}",
+                                entry.get("entity").and_then(|e| e.as_str()).unwrap(),
+                                entry.get("attribute").and_then(|a| a.as_str()).unwrap(),
+                                entry
+                                    .get("value")
+                                    .and_then(|v| v.get("c"))
+                                    .unwrap(),
+                                entry.get("timestamp").and_then(|t| t.as_str()).unwrap(),
+                                entry.get("provenance").and_then(|p| p.as_str()).unwrap(),
+                            )
+                        })
                 }
             }
+
+            Ok(())
         }
         Commands::Insert {
             url,